Period of Grant | US$ | Expiration Date | ||||||
ZNWOW Warrants | March 2013 – December 2013 | 2.00 | March 31, 2019 | |||||
ZNWAW Warrants | October 2008 – December 2008 | 7.00 | December 31, 2012* | |||||
ZNWAZ Rights Offering Warrants | December 2010 | 4.00 | December 31, 2012 | |||||
ZNWAL Rights Offering Warrants | August 2011 | 3.50 | August 15, 2012 |